Sodium Pyrosulfite

Sodium metabisulfite (Na2S2O5) is an inorganic compound, which is white or yellow crystal with a strong pungent smell. It is soluble in water and the aqueous solution is acidic. When it comes in contact with strong acid, it releases sulfur dioxide and generates corresponding salts. If left in the air for a long time, it will be oxidized into sodium sulfate, so sodium metabisulfite cannot be stored for a long time.

Printing and dyeing mordant; antichlor in after fabric bleaching; chemical and medicine reducer and sulfonating agent; bleaching agent of bamboo, wood and paper fiber; nonferrous metal dressing agent; waste water finishing agent; rubber coagulator; alkyl spice aldehyde in spice industry; depilating agent, softening agent and anti-wear agent in leather industry; reducer of developer and protective agent of fixative in sensitization industry.

Preservative, bleaching agent and antioxidant in food industry.
Water treatment as reductant.
Bleaching agent for textile fibers, paper pulps.
Printing and dyeing industry as a dechlorinating agent and cotton scouring agent.
Ore dressing agent in mining industry.
Fixative ingredients in photographic industry.
Production of oral, topical and parenteral pharmaceutical products
Solubilizing and acidifying agent for leather industry.
Rubber industry as coagulator.
Anticorrosion and bleaching treatment in wooden products.
Producing concrete water reducing agents in construction industry.

Vi har mange høykvalitets fabrikker med dypt samarbeid, som kan gi deg høykvalitetsprodukter og konkurransedyktige priser. Og vi kan også gi rabatter for bulkkjøp. Og vi samarbeider med mange profesjonelle speditører, kan levere produkter trygt og greit til dine hender. Leveringstid er ca 3-20 dager etter bekreftelse av betaling.

Sodium metabisulfite appears as a white crystalline or powder solid with a slight sulfur odor. Toxic by inhalation. Strongly irritates skin and tissue. Noncombustible, but may decompose to emit toxic oxide fumes of sulfur og sodium when heated to high temperature. A corrosive acid when mixed with water. Used as a food preservative and as a laboratory reagent.

1.It is used as bleaching agent, mordant, reducing agent, rubber coagulant, and also used in organic synthesis, pharmacy, spices, etc
2.It is used as chromatographic analysis reagent, antiseptic and reducing agent, dye and pharmaceutical industry
3.Sodium pyrosulfite has stronger reducibility than sulfite, and its effect is similar to that of sodium sulfite. Our country stipulates that it can be used for candied fruits, biscuits, sugar, crystal sugar, malt sugar, candy, glucose, liquid glucose, bamboo shoots, mushrooms and canned mushrooms, with the maximum use amount of 0.45g/kg. The residue (calculated by SO2) of candied fruits, bamboo shoots, mushrooms and canned mushrooms, grapes and blackcurrant concentrated juice is less than 0.05/kg; The residue of biscuits, sugar, vermicelli and other varieties is less than 0.1g/kg; The residual amount of liquid glucose shall not exceed 0.2g/kg.
4.Food industry is used as bleach, antiseptic, loose agent, antioxidant, color fixative and fresh-keeping agent.

1. Er du en fabrikk eller et handelsselskap?
Vi er et selskap som integrerer industri og handel, og tilbyr one-stop service.OEM kan godtas.

2. Gir du prøver? Er det gratis eller ekstra?
Gratis prøver. Prøvens fraktavgift må betales ved din side.

3. Har du noen sertifikater knyttet til kvalitetskontroll?
ISO 9001:2008 sertifisering for å sikre kvalitet.

4. Hva bør jeg gi for å få et tilbud?
Vennligst informer oss om produkttypen du trenger, bestillingsmengde, adresse og spesifikke krav. Tilbudet vil bli gjort for din referanse i tide.

5. Hva slags betalingsmåte foretrekker du? Hva slags vilkår aksepteres?
Godkjente leveringsbetingelser: FOB, CFR, CIF, EXW;
Akseptert betalingsvaluta: USD;
Akseptert betalingstype: T/T, Western Union; Paypal, Trade Assurance.
Språk som snakkes: engelsk.